纯代码让 WordPress 文章的网址URL自动生成超链接

直接放到主题的function.php文件里

/**
 * 让 WordPress 文章的网址URL自动生成超链接
 * https://www.51yhyh.com/
 */
add_filter('the_content', 'make_clickable');

//获取文章/页面摘要
function fanly_excerpt($len=220){
	if ( is_single() || is_page() ){
		global $post;
		if ($post->post_excerpt) {
			$excerpt  = $post->post_excerpt;
		} else {
			if(preg_match('/<p>(.*)<\/p>/iU',trim(strip_tags($post->post_content,"<p>")),$result)){
				$post_content = $result['1'];
			} else {
				$post_content_r = explode("\n",trim(strip_tags($post->post_content)));
				$post_content = $post_content_r['0'];
			}
			$excerpt = preg_replace('#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,0}'.'((?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,'.$len.'}).*#s','$1',$post_content);
		}
		return str_replace(array("\r\n", "\r", "\n"), "", $excerpt);
	}
}